Safety device for elevators.



C. P. SUGG.

SAFETY DEVICE FOR ELEVATORS.

APPLICATION FILED NOV- 29. 1916- 1,219,050. Patented Mar. 13,1911.

T W N W N m 1 em, g I U R, :q kbk WWW Uharlesf W %M CHARLES PETTIT SUGG,GF SPOT'I'SVILLE, KENTUCKY.

SAFETY DEVICE FOR ELEVATORS.

Application filed November 29, 1916.

To all whom it may concern:

Be it known that I, CHARLES PETTIT SUGG, a citizen of the United States,residing at Spottsville, in the county of Henderson and State ofKentucky, have invented certain new and useful Improvements in SafetyDevices for Elevators, and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in-the art to which it'appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful improvements in safety devicesfor elevators and comprises a simple and efiicient device of this natureso arranged that, in the event of the hoisting cable for raising theelevator becoming broken, automatic means is actuated to check thedescent of the same.

The invention comprises various details of construction, combinationsand arrangements of parts which will be hereinafter fully described,shown in the accompanying drawings and then specifically defined in theappended claims.

I illustrate my invention in the accompanying drawings which, with theletters of reference marked thereon, form a part of this specificationand in which Figure 1 is a front elevation of an elevator having mysafety apparatus applied thereto.

Fig. 2 is a central vertical sectional view through the same.

Fig. 3 is a side elevation.

Reference now being had to the details of the drawings by letter, Adesignates the guides for the car, which are provided with elongatedopenings B in the walls thereof, the upper and lower marginal edges ofsaid openings being inclined as shown in the sectional view of thedrawings, opening being upon the inner face. The car is designated byletter D and has plates E projecting from the sides thereof, theopposite edges of which plates are flanged and adapted to guide the caras it is raised and lowered by said flanges engaging over the edges ofsaid guides. Said plates are bent-toward each other at point designatedby letter F and one of the plates is bent horizontally at pointdesignated by letter K and has a Specification of Letters Patent.

Patented Mar. 13, 1917.

Serial No. 134,142.

horizontal portion II, the edge of which is fastened to the upper end ofthe opposite plate. Said horizontally disposed portion of the plate isapertured for the reception of the post N, which latter is pivoted to ablock 0 having its opposite ends inclined as shown and which conform toand are parallel with the inclined portions of said plates described.The block 0 has recesses R formed in its upper edge and, S is a coiledspring seated in said slots and bearing against the lower edges thereofand surrounding said post, while the upper end 7 of the spring bearsagainst the under surface of said horizontally disposed portion of theplate. It is the purpose of said spring to normally hold the block 0 atits farthest lowest limit. A cable, designated .by letter T, is fastenedto the upper end of said post and said cable is adapted to.

by the cable, to be held at their farthest upper limits and in whichpositions their beveled ends will be flush with the outer faces of theapertured plates through which said pawls extend.

When the weight of the elevator is supported by the cables, it will benoted that the spring is under tension and, in the event of the cablebreaking, the spring will throw the block 0 to its lowest limit and thefree ends of the pawls will be thrown out through the openings in saidplates and, when they come in contact with the lower inclined marginaledges of the openings in the guides for the car, they will serve asstops to prevent the elevator falling. Said openings are disposed atvarious locations along the opposite side walls of the frame so that theelevator will be caught quickly without attaining any great momentum inthe event of breakage of the cable.

An upward pull upon the cable will cause Mawthe block 0 to be raised andthe pawls which are pivoted thereto will be drawn upward so that theirfree ends will disengage the lower inclined ends of said openings, thuspermitting the elevator to be raised. It will be noticed that, when theweight of the elevator is constantly upon the cables, said pawls will bedrawn back so that they will not in any way interfere with the elevatorframe.

What I claim to be new is 1. A safety device for elevators compris ing acar guide having oppositely disposed openings, the upper and lower edgesof which are beveled, plates, the edges of which are flanged and adaptedto engage said car guides, said plates being apertured, the upperportions of the plates being bent toward each other and fastenedtogether, said plates having 7 a horizontally disposed portion which isapertured, a post movable through said aperture in the horizontalportion, a block to which said post is pivoted, said block havingrecesses in its upper edge, a spring seated in said recesses and bearingagainst the horizontal portion of one of said plates, a cable secured tosaid post, pawls carried by the post and movable through apertures inthe plates and designed to engage the openings in said guide.

2. A safety device for elevators comprising a car guide havingoppositely disposed openings, the upper and lower edges of which arebeveled, plates, the edges of which are flanged and adapted to cooperatewith the car guide, said plates being apertured, the upper portions ofthe plates being bent toward each other and fastened together, saidplates having a horizontally disposed portion which is apertured, a postmovable through said aperture in the horizontal portion, a block towhich said post is pivoted, the ends of said block being inclined andthe upper edge provided with recesses, a spring seated in said recessesand bearing against the horizontal portion of one of said plates, pawlspivoted to the ends of said block and movable through apertures in theplates, the free ends of the pawls being beveled.

In testimony whereof I hereunto affix my signature in presence of twowitnesses.

CHARLES PETTIT SUGG.

Witnesses:

' W. G. Sues,

EWING WILLIAMS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washingtomllfi.

